A Supplement to Chapter 3

A.1 tDCS adverse effects

Table A.1: Number of reports of tDCS adverse effects

	Intensity ratinga					Confidence ratingb
	none	a little	mode- rate	strong	very strong	n/a	un- likely	possi- bly	likely	very likely
anodal session
burning	12	10	6	2	0	12	0	2	5	11
dizziness	28	1	1	0	0	28	2	0	0	0
fatigue	20	6	0	3	1	21	7	1	1	0
headache	25	5	0	0	0	25	5	0	0	0
itching	13	10	4	2	1	13	0	1	8	8
nausea	30	0	0	0	0	30	0	0	0	0
pain	24	4	2	0	0	25	0	1	2	2
tingling	5	12	10	3	0	5	0	1	8	16
cathodal session
burning	11	5	12	2	2	11	0	3	6	12
dizziness	29	2	1	0	0	27	3	1	1	0
fatigue	18	7	3	4	0	20	8	4	0	0
headache	27	2	3	0	0	26	3	1	1	1
itching	14	14	4	0	0	14	0	1	9	8
nausea	32	0	0	0	0	30	2	0	0	0
pain	25	6	1	0	0	24	0	3	2	3
tingling	7	6	13	5	1	7	0	1	7	17
a “To which degree were the following sensations present during stimulation?”
b “To which degree do you believe this was caused by the stimulation?”

Figure A.1: tDCS adverse effects in Chapter 3. Number of reports out of 62 sessions (either anodal or cathodal tDCS). Top row shows intensity ratings [little, moderate, strong, very strong]; bottom row shows participant’s confidence that event was related to tDCS [unlikely, possibly, likely, very likely]. Adverse effects are sorted in descending order of number of reports (for very rare events (five reports or fewer for a given polarity), some text counts have been removed to prevent overlap).

A.2 MNI coordinates

Table A.2: Individual MNI coordinates of the right frontal eye field.

participant	X	Y	Z	participant	X	Y	Z
1	29.4	1.1	54.9	14	37.5	-1.6	52.6
2	33.0	-2.2	50.4	15	31.8	-8.4	59.0
3	30.6	-1.5	50.6	16	31.0	-5.1	54.3
4	25.7	-3.8	56.4	17	35.0	8.4	49.8
5	29.8	-5.2	55.8	18	28.1	-3.8	52.8
6	29.8	-1.1	58.3	19	41.2	-1.7	47.6
7	38.1	3.0	46.0	20	37.3	-0.9	43.4
8	31.5	0.5	45.6	21	34.3	-2.9	49.2
9	28.5	3.6	51.3	22	27.7	-10.1	51.0
10	28.1	-1.9	50.7	23	30.3	-5.3	55.3
11	30.6	-3.8	52.0	24	26.8	-3.9	54.6
12	36.5	-0.4	46.8	25	29.0	4.9	49.1
13	26.2	-1.1	54.7	26	30.3	-3.9	50.9